<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=, initial-scale=1.0" />
    <title>Document</title>
    <script src="../js/vue.js"></script>
  </head>
  <body>
    <div id="app">
        <h1>{{}}</h1>
    </div>
    <script>
      let vm = new Vue({
        data: {
          uname: "张三",
        },
      });
      
      console.log(vm);
      vm.$mount("#app");
    </script>
  </body>
</html>
